2015 China Travel Service Industry Development Research Report(Chinese Edition)

2015 China Travel Service Industry Development Research Report(Chinese Edition)

Matematika hitunglah luas daerah lingkaran dengan diameter
a.28m
b.35m
c.76cm
e.100cm

hitunglah luas daerah lingkaran dengan diameter
a.28m
b.35m
c.76cm
e.100cm

a. 22 ÷ 7 × 14 × 14

= 44 × 14

= 616 cm²

b. 22 ÷ 7 × 35 × 35

= 110 × 35

= 3850 cm²

c. 3,14 × 38 × 38

= 4534,16

e. 3,14 × 50 × 50

=7850 cm²

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